Dust-collector.



o. M. MoRsE.

DUST COLLECTOR.

APPLIGATION FILED JULY 1o, 1909.

Patented Dec.7,1909.

2 SHEETS-SHEET 1.

QQ N.

O. M. MORSE.

DUST COLLECTOR.

APPLICATION FILED JULY 1o. 1909.

942,657. Patented Dec. '7, 1909.

2 SHEETS-SHEET 2.

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DUST-COLLECTOR.

Specification of Letters Patent.

rammen nee. a, ieee.

vApplication led July 10, 1.909. Serial No. 506,937.

To all whom 'it may concern:

Be it known that I, ORVILLE M. MORSE, a citizen of the United States,residing at Jackson, in the county of Jackson and State of Michigan,have invented certain new and useful Improvements in Dust-Collectors, ofwhich the followin is a specification.

My invention re ates to improvements in dust collectors, andhas for itsAgeneral object to provide a dust collector wherein the bulk of materialis separated from the air in a centrifugal machine and the leakage fromthe centrifugal machine is arrested 1n a filterin collector connected toreceive such leakage rom the centrifugal-collector outet.

In the drawings, Figure lis a side elevation, with parts in section, ofa machine embodying my invention; Fien4 2 is an enlarged sectional viewof parts of the fabric separator and the dust discharge spout therefor,

taken on line 3-3 of Fig. v3. Fig. 3 isa plan view of themachine withparts broken away; and Fig. 4 is a det-ail sectionon line 4 4 of Fig. 2.

In the construction shown, 5 indicates in general a centrifugal dustcollector whereof 6 is the casing of any usual or preferred constructionproviding a tangential inlet 7, a bottom dust discharge 8, and a topdeck 9 having therein the air-outlet opening 9. The structure of thecentrifugal dust collector may be of any desired type anddoes not per seform any part of my invention.

ln any suitable position to receive the centrifugal collector leakage,preferably upon the deck 9, is mounted a filtering dustcollectorstructure of turret'form, generally indicated at 1l), and comprising, inthe embodiment sholwm'a base 11 of larger diameter than the deck 9 ofthe centrifugal collector so as to provide an overhanging ledge y12throughout its periphery and open at inlet 11 to thecentrifugal-collector outlet 9. Above the base 11 are arranged thesupports 13, carrying at a suitable elevation rollers 14, upon which isrotatively mounted a head '15 of slightly less diameter than the base 12and having secured at its periphery an endless depending lilteringskirtor wall 17, preferably of coarse, hairy fabric, such as burlap of one ormore thlcknesses, free at its lower end and extending down in proximityto the base 11'. Upon the base 11 in close proximity to the outer sideof the skirt or wall 17 is disposed a low guard rail.

18 for guiding the skirt circularly and preventing the free passage ofair under the lower edge of the skirt, and a similar inner wall 19 maybe and preferably is also provided.

For centering the head 15 and for giving it rotation, I provide astructureembodying a spider 20, preferably carried, as may also be thesupports 13, upon the inner wall 19, and giving bearing centrally to ashaft 21, rotarily and vertically fixed to the head 15. and bearing at asuitable point a worm Wheel 22. The lower end of the shaft 21 alsocarries a horizontally flexible sweep 23, passing just above the base 11for a purpose to be described. The worm wheel 22 is suit# ably driven asby a worm 24 mounted upon a power shaft 25 suitably positionedin bearingstandards 26 mounted on ythe base 11, said shaft bearing suitabledriving means such as the pulley 27. Thus it will be obvious thatrotation of the power shaft 25 will occasion vslow rotation of the head15 carrying with it the skirt 17.

For removing the dust gathered in the skirt 17 therefrom, I provide acleaner mechanism for operating upon a small continui ally changingportion of the moving skirt and a cleaning chamber for handling the dustcleaned from the fabric. Specifically I provide at any suitable pointupon the ina-"5" chine, in close proximity to the lnner side of theskirt, a straight backing wall 30 of vrigid construction mounted uponthe base 11, extending up to head 15 and forming a flat chord of theinner Wall 19. il ust outside of this back wall, l arrange a structure31, which with the said wall 30 forms a cleaning chamber and interiorlyaffords space for the play'of the whips, preferably employed forcleaning as will be described. Below the level of the base 11, thecleaning chamber extends in under'the ledge of the base 11 and down theexterior ofthe casing 6, as a chute open at its lower end.

As best shown in Fig. 3, the inner edges of the side walls of thechamber 31 are just sufliciently removed from the backing wall 30thereof to ermit the passage of the skirt 17, the slit le t-for thispurpose being prefy 'a so erably edged with a packing materi that, withthe fabric interposed between the back wall 30 and the side walls of thechamber `31, said chamber is .practically closed from communication withthe interior of the fabric collector. Thus, l provide in general afarbric-walled collector-chamber and a cleaning chambernon-communicating therewith, arranged for the passage of a portion ofthefabric wall through said cleaning chamber at all times.

Extending transversely through the chamber 31 isla rock shaft 32 bearingpliant Whips or fingers 33, of ratan or the like, which, when the shaftis oscillated, beat directly upon the portion ofthe skirt within thecleaning chamber 31, rocking motion or oscillation being imparted tosaid shaft 32 by a suitable connection thereof with the power shaft 25.In the specific construction shown, the power shaft 25 has a cam 33',operating upon a pivoted lever 34 which has a link connection 35 with acrank arm 36 connected to the rock shaft 3:2 which also bears a spring37 pressing in the direction to throw the beaters toward the fabric. Ialso preferably provide on the wall 30, strips 38 and spring lingers 38for holding the fabric out from the wall as it passes through thecleaning chamber. Now it will be observed that durinov each rotation ofthe shaft 25, the cam 33 imparts motion to the lever system to throw therock shaft backward against the 'tension of its spring and then torelease the lever system so that the rock shaft may be thrown forward bythe spring and the'beaters caused to strike 'uponthe skirt portionWithin the dust chute to clean it. If desired, air connections may beprovided for the cleaning chamber to pass air through the fabricsegregated in said chamber, but such provision is not gen-v erallynecessary. Further, for the removal of such dust as may accumulatewithin the fabric collector upon the base 11, I provide in theoverhanginff ledge 12 in register with the cleaning cham er 3l a dustescape opening 39 overlain by a valve 39', preferably gravity operatedto close the opening and arranged to be lifted by the sweep 23, which isso shaped as, in its passage just above the base 11, constantly todirect any -dust accumulation toward the periphery and, upon raising thevalve, to push the dust into the open orifice 38 for escape into thedust chute 3l. The yielding construction of the sweep enables it tofollow the contour of the inner wall 19 and the flat wall 30, and thevalve 39' has a stem 39 pivoted at its end and inclined, as shown inFig. 1, so that the sweep` lifts the valve in passlng.

In the o eration of the machine, dust laden air driven into the inlet 7has the bulk of the material removed therefrom by the action of thecentrifugal separator 5, but a certain proportion of thelightnpracticallyimpalpable or floating dust is lncapable of suchseparation and escapes with the outgoing a1r throu h the orifices 10,10,mto the appropriate y disposed fabrlc-walled secondary chamber. Thelarge spread of ric employed for this purpose being prefy erably coarseburlap or jute cloth, which collects dust well and cleans easily.

In the operation of the machine, the turret is constantly and uniformlyrotated and fresh portions ofthe endless fabric wall or skirt, free atits bottom and unstretched or loose peripherally, constantly broughtwithin the confines of the cleaning chamber and there whipped by thewhips 33 as it passes gradually through the chamber, so causing thedust' to4 be whipped from the cloth and to pass through the dust chutefor ultimate delivery apart from the material caught in the centrifugalmachine. At the same time, any dust which may settle upon the base 11 isconstantly being gathered by the sweep Q3 and removed to the exteriorcleaning chamber through the valve opening 39.

While I have herein described' in some de` tail a particular embodimentof my invention, it will be apparent to those skilled in the art thatmany changes in the details of construction might be made withoutdcparture from the spirit and scope of my invention, and y What I claimand desire to secure by Letters Patent is:

l. The combination with a centrifugal dust collector having an airoutlet, of a tiltering collector having its inlet connected with saidoutlet, providing `a rotatable element having an endless peripheralskirt of filtering material suspended from its upper edge and free atits lower edge through which the air must pass in escape, means forsegregating a continually changing portion of said skirt fromcommunication with the interior of the filtering collector, and meansfor cleaning the segregated portions of the skirt. i

2. The combination with a centrifugal dust collector having an outletopening, of a filtering collecting element disposed with reference tosaid centrifugal dust collector f to receive leakage therefrom, saidelement having a continuous peripheral suspended wall of fabric free atits lower edge, means for rotating the said fabric wall, a cleaningchamber substantially segregated from the interior of ,said element,through which a continually changing gportion of the fabric wall passes,and means Within said cleaning chamber for directly whipping the fabrictherein contained.

3. The combination with a centrifugal dust collector having an outlet inits top, of a fabric collecting-chamber structure superposed upon thecentrifugal collector proatacar viding a suitableI head, a peripheralfabric wall depending from said head and free at its lower edge, andunstretched peripherally, means for rotating said head and wall, acleaning chamber through which a continually changing portion of thefabric wall passes, and means for cleaning the contained portion of saidfabric wall.

4. The combination with a centrifugal dust collector, of a fabriccollector connected therewith, providing Va rotatable peripheral fabricwall, suspended at its upper edge and free at its lower edge, aretaining wall with which the lower edge of said fabric coacts, acleaning-chamber structure through which a changing portion of thefabric wall passes,

and means for cleaning the portion of the fabric Wall contained withinsaid cleaning chamber.

5. The combination with ay centrifugal dust collector, of ahorizontalturret structure superposed thereon, the continuous peripheralwall of said turret being of fabric unstretched and free at its loweredge, means for rotating said fabric wall, a cleaning chamber throughwhich a continually changing portion of said wall passes, having anopening to the interior of the turret, means within the cleaningchamberv for cleaning the portion of the fabric therein, and meanswithin the turret for forcing material accumulating on the bottomthereof into the cleaning chamber through said opening thereto.

6. The combination with a centrifugal dust collector, of a horizontalchamber structure superposed thereon of greater diameter than the dustcollector providing an overhangingledge, the peripheral wall of saidchamber being of fabric, means for rotating said fabric wall, a cleaningchamber through which a continually changing portion of said wallpasses, said chamber extending under the overhanging ledge of the dustcollecting chamber, means within the cleaning chamber for whipping theportion of the fabric wall therein, there being an opening from saidcleaning chamber through the `ledge into the fabric dust collectingchamber', a valve for said opening, and means for sweeping dustthroughsaid opening arranged automatically to operate said valve.

7. The combination with a centrifugal dust collector, of a superposedscreening structure comprising a head, means supporting and guiding saidhead for rotation, a fabric skirt depending from said head free atl itslower edge, a cleaning chamber through which a changing portion of saidfabric wall passes, whippers within said cleaning chamber, and powerdriven means for rotating the head and operating the whippers.

8. In a comprising a body of fabric having an open but fibrous mesh withthe fibers loosely obstructing the mesh-openings, as coarse jute burlap,means suspending said agent in a path for dust laden air with its lowerend -loose and unstretched, and means for Whipping said agent.

In testimony whereof I hereunto set myv hand in the presence of twowitnesses.

ORVILLE M. MORSE. Witnesses:

JOHN L. BENTLEY, WILLIAM B. KNICKERBOCKER.

dust collector, a filtering agent,

